0be1ab58ef33c40fa092cc56b1730967e77fb5cc3c54f09a0e599b0e658f389c

Analysis

max time kernel
598s
max time network
592s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
17/05/2026, 13:25

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General

Target
MEIPreload/avcodec-57.dll
Size 14.0MB
Sample260517-qpdh9agy6x
SHA256 0be1ab58ef33c40fa092cc56b1730967e77fb5cc3c54f09a0e599b0e658f389c
MD5 06280e3e5eec9783b4af071e7375f820
SHA1 380036754e5fc786137ceddba989711e02146d05
SHA512 9edd0515eff29bcb27cd447d97ae7b02f68e2b06885b8671f7cfca7e90696cd7b100a8520e533f2fc9f70795889a983ddec546a5f9827e36d13e63b762909d5d
SSDEEP 393216:VD6UzgKtqQKrULr6fB9mG0vPIPOlOn9xW1p3:heoPIPhu
TLSH
T17AE6BF12FA529242E9C60076D7FEAF67293C1B38131554F3A398ADF4B970AD27632707
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 6112	4408	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\MEIPreload\avcodec-57.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\MEIPreload\avcodec-57.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:6112

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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